99 speed stepless adjustable lithium battery spot welding machine The 99 speed stepless adjustment is suitable for commonly used 0.1mm nickel plated sheets, and a 0.2mm effect can also be achieved by overlaying 2 welds. Cannot weld pure nickel or copper aluminum, etc. High temperature resistant flexible silicone wire made of flexible silicone material, resistant to tension/high and low temperatures, and not hard in winter The power adjustment knob simplifies complexity, with small counterclockwise power and clockwise power, and stepless adjustment The trigger button outputs a high-energy pulse every time the welding needle is pressed, and the welding efficiency is at will with an output pulse indicator light Professional aluminum oxide copper welding needles are sturdy, durable, high-precision, and more practical Colour:As Shown Material:nylon Package Contents: 1 set x 12v Lithium Battery Spot Welder Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.